Dawn spacecraft is equipped for gamma and neutron spectroscopy to analyze the chemical make-up of Ceres surface material down to a depth of 1 meter. To do this it must first descend to a low altitude--the target is 375 km. It has already descended to within 600 km and it seems likely to reach its goal. The dwarf planet has abundant water ice in its outer mantel mixed with rock. This is clear from its measured density of 2 g/cc and from its geometry which shows a degree of layered differentiation. Nitrogen in the form of ammonia-bearing minerals was recently reported at a AAS conference (Division for Planetary Sciences). That's a key element (in manufacturing as well as in biology). More pieces of the puzzle should be falling into place as soon as the descent to final altitude is complete.